precolonial adjective 1noun 1forms 1 adjective1 •Of or pertaining to a historical period before colonization. noun1 •An inhabitant of an area before colonists first arrived.After 1970 one no longer expected to find Tio whose parents had experienced the precolonial period, except for a few very old persons. Most people now were grandchildren of the precolonials. — 1990 formsprecolonials